‘Amoebiasis’ (Amoebic dysentery) is caused by

Quinine used for treatment of malarial fever, is extracted form

The study of worms which cause parasitic infestations in man is called

$A$ – Smoking increases $O_2$, content in blood. $R$ – Nicotine stimulates adrenal gland.

‘Syphilis' is a sexually transmitted disease caused by